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This instruction manual provides installation, operation, maintenance, and testing information for the BE1-50/51B Overcurrent Relay. It covers relay specifications, controls and indicators, functional operation, installation requirements, and testing procedures.

This instruction manual provides installation, operation, maintenance, and testing information for the BE1-50/51M Overcurrent Relay. It covers relay specifications, controls and indicators, functional operation, installation requirements, and testing procedures.

This application note explains how to select the appropriate BE1-50/51B model and settings when replacing legacy IAC and CO electromechanical overcurrent relays. It provides guidance on matching time-current characteristics, reset characteristics, and instantaneous overcurrent settings for successful retrofit applications.

This application note examines the replacement of legacy electromechanical overcurrent relays with modern BE1-50/51B retrofit relays. It highlights how plug-and-play retrofit solutions can extend switchgear life, reduce maintenance requirements, and improve protection system reliability.

This instruction manual provides installation, operation, configuration, and maintenance information for the BE1-25A Auto Synchronizer. It covers automatic synchronizing functions, controls and indicators, specifications, installation requirements, and routine maintenance procedures.

This manual provides operation and installation information for a custom BE1-BPR Breaker Protection Relay configured with a customer-specific PG&E logic scheme. It covers the relay’s specialized logic implementation, configuration, and application requirements.

This manual provides operation and installation information for special-version BE1-BPR Breaker Protection Relays with customer-specific modifications. It covers model-specific configurations, operating characteristics, application requirements, and functionality unique to part numbers 9272000326 and 9272000327.

This manual provides operation and installation information for the enhanced BE1-BPR Breaker Protection Relay in a 19-inch rack-mount case. It covers model-specific features, mounting requirements, and application information for relays with part number 9272000325.